baber/WOPTO huggingface dataset:
Patent GB-1200735-A (GB)
Title: Contact breaker assemblies for use in ignition distributors
Inventor: JUKES NORMAN ALFRED
IPC: F02D11/08
Filed: 1967-02-14
Abstract: 1,200,735. Mechanical interrupters. JOSEPH LUCAS (INDUSTRIES) Ltd. 29 Jan., 1968 [14 Feb., 1967], No. 7009/67. Heading H1N. In a contact-breaker assembly for ignition in I.C. engines a blade spring 15 which urges the cam-follower associated with the movable contact into engagement with the cam, and which also acts as electrical connection to the movable contact, has its fixed end extended and bent back on itself to form a spring clip for reception of a blade connector 19 on the end of a lead 21. To improve radio interference suppression the input lead 29 is taken directly to the capacitor 18 and a further lead 21 is taken from the capacitor to the movable contact spring 15. A special V-shaped connector 22 of springy material interconnects leads 29 and 21 and has suitable apertures (26, 28, Fig. 5, not shown), whereby it can be readily fitted in an annular groove (32, Fig. 4, not shown) in the terminal post (31) of the capacitor 18.
Patent GB-1174953-A (GB)
Title: Method of Manufacture of Terephthalic Acid
IPC: C07C51/265
Filed: 1967-02-14
Abstract: 1,174,953. Terephthalic acid. MITSUI PETROCHEMICAL INDUSTRIES Ltd. 14 Feb., 1967 [14 Feb., 1966; 8 March, 1966], No. 7057/67. Heading C2C. Terephthalic acid is produced by reacting p-xylene with oxygen at high temperature and pressure using acetic acid as the reaction medium and in the presence of a catalyst which is soluble in acetic acid in a continuous process which comprises (1) continuously feeding pxylene, oxygen, catalyst and acetic acid into a reaction zone in which they are completely mixed and in which at least 95% of the terephthalic acid formed in the process is produced, the amount of oxygen being such that the exhaust gas from the reaction zone contains at least 3% by volume of oxygen; (2) continuously withdrawing a liquid product stream from the reaction zone; (3) adding to the product stream while it is at 180 C. or above and contains at most 20% by weight of solid terephthalic acid, a volume of acetic acid which is 1/10-5 times the volume of the product stream and which is at a temperature lower than that of the product stream; and (4) recovering the terephthalic acid crystals thus produced, the pressure during step (3) being maintained above the vapour pressure of acetic acid. The reaction zone may be maintained at 200-250 C., and 28-45 kg/cm.<SP>2</SP> gauge, and the average residence time of materials in the zone may be 20-180 minutes.
Patent GB-843347-A (GB)
Title: Electronic regulating systems
Inventor: KRUMPE ALFRED
IPC: H02P7/26
Filed: 1959-03-04
Abstract: 843,347. Automatic speed-control systems. INTRON LEIPZIG WERK FUR INDUSTRIELLE ELEKTRONIK VEB. March 4, 1957, No. 7075/57. Class 38 (4). In a motor speed regulating arrangement, wherein starting is controlled by current limitation, transients at the change-over from starting to automatic regulation are avoided by the use of a pentode input stage 2 in the control amplifier in which reference volts from a potentiometer 3, opposed by the output of a tachometer generator 4, are applied to the control grid and a voltage proportional to the current through motor armature 10, opposed by a positive bias, is applied to the suppressor grid, suppressor control taking over from grid control when the armature current exceeds a predetermined value. Grid currents are limited by resistors 8, 9.
Patent GB-646059-A (GB)
Title: Improvements in or relating to apparatus for mounting pneumatic tyres on, or for removing them from, wheels
IPC: B60C25/04
Filed: 1948-05-28
Abstract: 646,059. Vehicle wheels. FROST & CO., Ltd., H., and NEWMAN, L. C. May 28, 1948, No. 7097/49. Divided out of 645,970. [Class 144 (i)] A tyre-lever 1 for use in connection with tyre-manipulating apparatus of the kind described in Specification 645,970 has a curved head 2, for engaging under the tyre-bead, and is fitted with a longitudinally-adjustable roller 5 which, in the tyre-removing operation, is adapted to engage the wheel-centering spindle 14,. as shown in Fig. 7, to limit the entry of the head 2 into the tyre 17. For use in forcing the tyre bead into the rim, Fig. 8, the lever has a hole 13 for assembly on the spindle 14, the roller 5 being moved along the lever into tyre-bead engaging position. In this operation, an adjustable fulcrum for the lever is provided by a pin 21 fitted into a selected hole 22 in the spindle.
Patent GB-328727-A (GB)
Title: Improved process of making wrenches
IPC: B21K5/16
Filed: 1929-03-05
Abstract: 328,727. Brungardt, A. O. March 5, 1929. Hand tools.-Stillson, monkey &c. wrenches comprising a housing forged integral with a shank and having a channel intersecting a nut aperture are manufactured by forging the shank and housing in one operation, then piercing the channel and finally punching the nut aperture. The shank 11 and housing 12, Fig. 5, are forged between dies 21, 23, Fig. 2, which are shaped to form lugs 15 and shallow depressions 13 where the nut aperture is to be punched. The forging is next gripped between holding dies 24, 25, Fig. 4, and a tapered punch 27 driven through the housing 12 to form the tapered channel 14. The nut aperture 16 is formed by a punch 32 on a head 31 coacting with a base 30 apertured at 30a and shouldered at 30<b> to engage one of the lugs 15 for registering the depressions 13 accurately with the punch.
Patent GB-1472234-A (GB)
Title: Metallic structures
IPC: B05D1/00
Filed: 1976-02-20
Abstract: 1472234 Coating metal surfaces BALFOUR BEATTY Ltd 20 Feb 1976 [20 Feb 1975] 7177/75 Headings B2E and B2L [Also in Divisions B5] A coating of corrosion resistant material is applied to an exposed metal surface or surfaces, e.g. a section of a metal girder 11, by surrounding the surface or surfaces with a flexible shroud 2, e.g. of polyethylene, and sealing boundary edges 3 of the shroud to form a substantially fluid tight enclosure, evacuating air and other fluids from the enclosure, allowing liquid or semi-liquid corrosion resistant material to form a coating on the surface or surfaces, wthdrawing excess coating material and permitting or causing the coating material to harden. If the exposed surface or surfaces are at least partially submerged in water, e.g. the hull H of a ship, the shroud is arranged so that the shroud or an extension of it protrudes above the water surface. Water is evacuated from the sealed enclosure and replaced by air. Then corrosion resistant material flows into the enclosure through ports 33 and the enclosure is evacuated so that the metal surface or surfaces are coated and the coating is allowed to harden. The shroud may be removed before final hardening takes place. Water may be removed from the metal surface or surfaces by drawing warm oxygen free nitrogen, dry air or other gaseous fluid through the enclosure before evacuation. An area of the shroud may carry on the surface nearer that to be coated a porous sheet, e.g. mesh or netting, to space the shroud for the surface or surfaces to be coated.
Patent GB-579471-A (GB)
Title: A new or improved control valve for fluids
IPC: F16K3/03
Filed: 1944-04-19
Abstract: 579,471. Valves. JONES, C. O. I., and CROWTHER, J. April 19, 1944, No. 7215. [Class 135] An iris diaphragm type of valve comprises a series of angularly spaced plates 14 of the form shown in Fig. 4, each having a rib 17 which engages in one of a series of tangential slots 19 in one body portion 13 of the valve and each having a tongue portion 16 which engages in a groove 15 of the adjacent plate. Each plate also has a pin 18 which is engaged by one of the slots 20 in a ring member 21 housed in the other part 11 of the valve body and actuated by a crank lever 24 and a pin-and-slot connection to a lug 22 on the ring. Simultaneous movement of the plates is effected by a rotary movement of the ring 21 to vary the size of the orifice from a clear passageway as in Fig..2 to a completely closed passageway as in Fig. 5. Other forms of actuating mechanism comprise the worm and gear mechanism 31, 32, 33, Fig. 8, or a screw-and-nut mechanism operating on a slotted lug on the ring 21.
Patent GB-213275-A (GB)
Title: An improved device for indicating the power and voltage of electromotors
IPC: G01R5/14
Filed: 1924-03-21
Abstract: 213,275. Lott, C. March 21, 1923, [Convention date]. Indicators and alarms, applications of. - An indicating-device for the output of an electric motor comprises an iron core 7, Fig. 1, slidably disposed in a bore 1 lined by a tubular insulator 8, and traversed by the magnetic flux in the field magnet 2. The core is. pivoted to one end of an index 4 which co-operates with an indicator tongue 3. The index may be adjusted by means of a spring 9 and set-screw 10, so that on normal load conditions the index coincides with the tongue 3. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the arrangement shown in Fig. 2 (Cancelled), for indicating the speed of the motor. A sleeve 19 carrying the weighted springs of a centrifugal governor is provided with a brake disc 18 which can contact with a friction disc 20 carried on one end of the index, the index thus indicating whether the speed is above or below normal. This subjectmatter does not appear in the Specification as accepted.
Patent GB-398238-A (GB)
Title: Improvements in or relating to electrical indicating devices
IPC: G01R13/04
Filed: 1932-03-10
Abstract: 398,238. Oscillographs. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Curtis, A. M. ; 132, North 19th Street, East Orange, New Jersey, U.S.A.) March 10, 1932, No. 7236. Convention date, March 16, 1931. [Class 37.] Electrical indicating instruments having vibrating elements through which the current passes have the vibrator shunted bv one or more circuits resonant to different harmonics of the vibrator. In order to prevent damage to the vibrating element by discharge currents from the condensers in the shunt circuit, a shunt resistance is employed. The string 10 of an oscillograph is damped by a shunt 14, 15, 16 resonant to the fundamental of the movement, the shunt 17, 18, 19 being resonant to the third harmonic. The protective resistance shunt is shown at 21.
Patent GB-565608-A (GB)
Title: Improvements in and relating to lamps sockets
IPC: H01R33/08
Filed: 1943-05-07
Abstract: 565,608. Lamp - holders. BRITISH THOMSON-HOUSTON CO., Ltd. May 7, 1943, No. 7245. Convention date, May 8, 1942. [Class 38 (i)] A holder for a tubular lamp with contact prongs at its ends comprises a body built up of laminations 18 between which contacts 15, 16 are movably mounted so as to engage under spring pressure the contact prongs inserted laterally in slots 23, 24 in' the body. The contacts are pivoted on studs 25, 26 and are acted upon by an arcuate spring 29 that engages insulating blocks 30. Inclined surfaces 32, 33 of the contacts lie in the slots 23 so that the contacts are displaced by the prongs 13 as they are inserted or withdrawn. A spacer 31 is fixed between the free ends of the contacts. The pivots 25, 26 form a connection from the contacts to terminal strips 27, 28. Angular brackets 35 provide for mounting the holders on a support.
Patent GB-267943-A (GB)
Title: Improvements in and relating to carburetters
IPC: F02M7/24
Filed: 1927-03-16
Abstract: 267,943. Torta, R. March 16, 1926, [Convention date]. Spray carburettors.-Fuel is supplied from the main tank through a pipe 4, 4<1> and a calibrated orifice 5 to a supply chamber 6 connected to the nozzle 8 through a suction-actuated valve 10 and a duct 7 provided with air inlet apertures 7<1>, 8<1>. Air is also admitted immediately above the seat of the valve 10 through apertures 151, 15<11> and. a duct 14, the apertures 15<1>, 15<11> being controlled by a hand-operated piston 16. The valve 10 is actuated by suction through a piston 12 secured to the valve stem 10<1>. The nozzle 8 opens at right-angles into an interchangeable choke tube 9 in the mixing-chamber 1. The slow-running nozzle 22 is supplied with fuel from a subsidiary supply chamber 18 connected to the chamber & through a calibrated duct 19, the supply being controlled by a suction-actuated valve 18". In a modification. hand-operated means are provided for actuating the valve 10 in addition to the suction control, the means comprising a cam-actuated tappet rod slidably mounted in the top of the chamber 13 and bearing on the valve stem 10<1>, the cam being connected either directly to a hand control or to the arm 3 of the throttlevalve 2. In operation, the initial fuel supply from the chambers 6, 18 is controlled by the size of the opening around the valve stems 10<1>, 18<1>. and then, when the chambers empty, is controlled by the calibrated orifices 5, 19.
Patent GB-754951-A (GB)
Title: Automatic feeding of confectionery to wrapping machines
Inventor: HORN KENNETH LESLIE
IPC: B65B35/44
Filed: 1954-03-15
Abstract: 754,951. Feeding tablets to a wrapping machine. FORGROVE MACHINERY CO., Ltd. Feb. 2, 1955 [March 15, 1954], No. 7428/54. Class 78 (1). Tablets are fed to a wrapping machine by the combination, with an intermittently-moving element 23 having article-receiving pockets 22 and a vibratory feeder 10 arranged to feed a procession of aligned articles towards the pocketed element, of a feed trough 13 arranged to deliver the articles from the feeder to the said pockets, a band conveyer 14 in the feed trough, a gate 17 and means for opening the gate when the pocketed element is stationary to permit the conveyer to feed the leading articles into the pocket opposite the trough. As shown, cam 29 rotates in step with step-bystep rotary disc 23 and, via follower 27, arm 24, stirrup 20, opens pivoted gates 17 to allow a tablet to be moved forward at high speed by belt 14 to fall into a pocket 22, the operation being effected at the moment that such a pocket dwells in a position opposite to the gates. Specifications 676,822 and 728,097 are referred to.
Patent GB-696603-A (GB)
Title: Improvements in and relating to washing machines
Inventor: LLOYD-KESSEL FREDERICK
IPC: D06F1/00
Filed: 1951-03-30
Abstract: 696,603. Washing-machines. FISHER (OLDHAM), Ltd., H. March 31, 1952. [March 30, 1951] No. 7451/51. Class 138 (ii). A washing machine casing comprises a substantially square or rectangular metal base 1 having an upright 2 rigidly secured to each of its four corners and braced together by horizontal bracing members which are adapted to support a gearbox 16, motor 15, wash tub 14 and ancillary equipment, the uprights 2 being provided with longitudinal slots or grooves 4 to receives panels 8 which close the sides of the casing. The uprights are preferably as shown in section in Fig. 4 though the grooves 4 may be formed in separate U-shaped members welded to the uprights. The base 1 has a flange 10 and is provided with grooves 5 in members 37, Fig. 5, to receive the lower edges of the panels. In one example, Fig. 1, the bracing members comprise two angle section strips 11, though four may be provided. The gearbox 16 is supported by bolts 17 on a platform comprising two flanged inverted channel-section members 18 bolted to the members 11, a flanged rear member 18a and a diagonal member (not shown) connecting the members 18, 18a. Additional support may be provided by strut members 34 or A-brackets secured to the bracing members 11 and to the base 1. A top fitting or casting 6 has an over-hanging rim 40 screwed to the uprights 2. A pump 29 for draining the tub 14 through a pipe 33 is mounted on a platform 28 pivoted at 27. Springs 42 press a pinion 30 on the pump shaft into frictional engagement with a wheel 31 on the motor shaft, though the drive may be disconnected by turning a lever 49 fixed to a spindle carrying a cam disc 48 which bears on a flanged part 44 of the platform 28. The lever 49 is in recess 50 in a sub-panel 46 and is accessible through an opening in the rear panel 8. The motor 15 also drives an agitator shaft 23 and a wringer shaft 25. In a modification the built-up platform 18, 18a is replaced by a flat sheet metal platform (not shown) and this may be supported by diagonal bracing members, Fig. 6 (not shown) instead of the members 11. In a further example, Figs. 9, 10 (not .shown) the single rear panel 8 is replaced by an upper panel and a control panel, both fixed to the uprights 2 behind the grooves 4, and a bottom panel slidable in the grooves 4 and acting as a door.
Patent GB-1534445-A (GB)
Title: Sealing system for a rotary rock bit
IPC: F16J15/32
Filed: 1976-02-25
Abstract: 1534445 Boring earth DRESSER INDUSTRIES INC 25 Feb 1976 [27 Feb 1975] 07465/76 Heading E1F In a roller-cutter drill bit 10, each cutter 14 is mounted on a spindle 13 by a bearing system including roller bearings 16 running in a raceway groove in the cutter 14, a seal 20 being provided between the cutter 14 and spindle 13. As described the bearing system includes roller bearing 16, ball bearing 17, friction bearing 18 and thrust button 19. In a first embodiment, as shown, the flushing fluid is air which is circulated through passages 27, 22, 26 to cool the spindle 13 and bearing system, the air being prevented from entering the bearing system by seal 24. In a second embodiment (not shown) which uses liquid as the flushing fluid, the bearing is supplied with lubricant from a reservoir whose pressure is equalised with the hydrostatic pressure in the borehole by means of a flexible diaphragm.
Patent GB-609527-A (GB)
Title: Improvements in the mass production of reinforced concrete constructions
IPC: B28B23/04
Filed: 1946-03-11
Abstract: 609,527. Moulding prestressed concrete units. LONDON & NORTH EASTERN RAILWAY CO., and ABELES, P. W. March 11, 1946. No. 7499. [Class 87(ii)] Concrete units such as girders, beams, poles or sleepers are moulded in line around pretensioned reinforcing wires 6, Fig. 5, in moulds each consisting of a bottom plate 4, removable side walls 7, 8 slotted or perforated end plates 43 and cross-ties 11. In operation the wires 6 are cleaned, arranged in the required manner through the end plates and then tensioned, the mould parts are assembled around the wires and the concrete poured and vibrated. The side walls are removed as soon as possible and used in the erection of another mould. The units may then be positioned under canopies of heat insulating material and hot air introduced through pipes. When the units have hardened, the tension on the wires is relieved and the wires cut or burnt off and the units are removed by a conveyer or by an overhead trolley 51, Fig. 8. When a conveyer is used, separate units in a line may be separated after removal from the casting site. The units may be removed on the mould bottoms. The moulds are filled from a hopper 44 or from containers 47 on a transverse beam 46. The moulds are vibrated by external overhead or internal vibrators. In a modification, the mould bottoms may be mounted on springs or rubber blocks on vertical columns and vibrators are moved along a rail, fixed to the mould bottoms, until they are in the desired position, where they are secured by wedges. The mould sides are secured to the bottom by bolts, pins, clips or hinges. Longitudinal partitions may be provided in the moulds. Where transverse partitions are used the intervening spaces may be filled with mastic, to seal the slots or perforations in the partitions. The end plates 53, Fig. 9 may be hinged to the side walls and have horizontal slots 52, a removable plate 55 having vertical slots 54 co-operating with the plate 53 to locate the wires. Cross-bars 56 being provided to secure the side plates and retain the plates 55. Intermediate anchorages or guides for the wires may be provided where the number or pattern of the wires differs from unit to unit along the line. Specifications 338,864, 338,934, [both in Class 87(ii)], 541,835, 554,693, [both in Group X], 572,385, 572,387, 572,388, 572.390 and 572,391, are referred to in the Provisional Specification.
Patent GB-326348-A (GB)
Title: Improvements relating to bed tables for hospital and like use
IPC: A47B9/14
Filed: 1929-03-07
Abstract: 326,348. Whitfield, H., and Whitfields Bedsteads, Ltd. March 7, 1929. Invalids' &c. tables; legs; table tops.-A table, particularly a bed table, is made with tubular legs, and with extensions which slide vertically in the legs, and are provided with castors or feet. Fig. 1 shows an end view of a table consisting of a sheet-metal top a which is introduced into the longitudinal joints of four pieces of close-joint tubin b which, together with four chill castings or other corner members c, form the frame of the table top. The members c also attach four tubular legs d, each end pair of which is braced apart by a cross tube e. Tubular members g, which telescope into the legs d, are similarly braced apart by cross tubes h, on which are vertical members l passing through sleeves n on the cross tubes e. Pin and slot adjustments m, o enable the height of the table to be adjusted. The parts l, n may be transposed and placed on the tubes e, h respectively.
Patent GB-883468-A (GB)
Title: Improvements in or relating to semi-conductor devices
IPC: C30B15/04
Filed: 1960-03-03
Abstract: 883,468. Semi-conductor devices. BER. NARD, M. G. A. March 3, 1960 [March 11, 1959], No. 7580/60. Class 37. A voltage variable capacitance diode comprises a PN junction, having an uncompensated inpurity concentration gradient of 10<SP>19</SP> to 10<SP>21</SP> atoms/cm<SP>4</SP>, located in a section of crystal so tapered that the ratio of the maximum capacitance of the junction (under zero applied voltage) to its minimum capacitance (under the peak reverse voltage which can be applied) has a value between 4 and 6. As shown, in the Specification, this configuration is designed to give maximum gain and minimum noise when the device is used in a microwave parametric amplifier. A typical device, Fig. 1, is made by crystal growing in a melt of germanium doped with indium or gallium to which arsenic or antimony is subsequently added, the pulling rate and impurity concentration in the melt being selected to give the desired impurity concentration gradient. A cylindrical or parallelipiped rod including the junction cut from the grown crystal, after first being provided with soldered contacts 4, 5 is selectively electrolytically etched, with the junction reverse biased, to the configuration shown.
Patent GB-579408-A (GB)
Title: Improved manufacture of methyl silicon polymers
IPC: C08G77/06
Filed: 1944-04-25
Abstract: Liquid methyl silicon oxide copolymers are prepared by cohydrolysing and intercondensing a mixture of 80-95 mol. per cent of a hydrolysable dimethyl silicane and 5 to 20 mol. per cent of a hydrolysable mono-methyl silicane, the hydrolysable substitutents in the silicanes being either halogens or ethoxy radicals.  In examples: (1) a mixture of .9 mol. of dimethyl-diethoxysilicane and .1 mol. monomethyltriethoxysilicane was dropped with stirring into half its volume of 2N HCl at such a rate that the temperature did not rise about 45 DEG  C.  The mixture was then refluxed for 4 hours to give an oil which after washing with water and drying had a viscosity of 70 Saybolt sees. at 86 DEG  F.; (2) the oil thus prepared was increased in viscosity to 135 Saybolt secs. by passing a stream of carbon dioxide therethrough; (3) the mixture in (1) was hydrolysed by refluxing with an equal volume of 50 per cent alcohol and 50 per cent concentrated HCl. Tables are given in the Specification showing how the stability of the products, measured in time taken to gel when heated at 230 DEG  C., increases with the viscosity of the products; also, the low temperatures at which the products solidify.  The copolymers are thus suitable for use as hydraulic fluids for the operation of pressure-actuated devices.